Gasification’s Role in DOE’s Vision for Carbon Pollution-free Power
Gasification can be used to convert sustainably sourced fossil fuels and other solid feedstocks such as wastes, waste coal, and biomass into a gaseous form, referred to as syngas, which is composed primarily of hydrogen and carbon monoxide. With gasification-based technologies, pollutants can be easily captured and then disposed of or converted to useful products. Steam is added to syngas in a water-gas-shift reactor to convert the carbon monoxide to carbon dioxide (CO2) and to produce additional hydrogen. The hydrogen and CO2 are separated with the CO2 captured and sent to storage or converted to a useful product1. The hydrogen is a versatile energy carrier which can be used for clean power generation in reversible solid oxide fuel cells and 100 percent hydrogen fired turbines, stored to provide flexible grid load following duties, used as a transportation fuel, and used in difficult to decarbonize industrial sectors.
Gasification-based clean power generation closely allied with clean hydrogen production fits into a larger strategic context of wide-ranging carbon management involving direct air capture, point-source carbon capture, carbon storage, and low-carbon energy, helping to move towards a carbon pollution-free power sector and ultimately a net-zero economy. This is depicted in the figure2 below.
All of the Gasification Systems projects support this vision by advancing key technologies for energy systems decarbonization forward towards commercial competitiveness.